A sunspot is a dark area on the surface of the sun that is about 4000 degrees cooler than the… 1 answer below »

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A sunspot is a dark area on the surface of the sun that is about 4000 degrees cooler than the surrounding surface. Over the years astronomers have counted the number of sunspots that occur within a given year. The graph of these data can be modeled by the function spots=50cos((2*pi*years)/11)+60, where years is the number of years since 1750. Find two years after 2000 in which the number of sunspots will exceed 40.

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